Blower



reference is to CHARLES W. EMERY, OF PHILADELPHIA, PENNSYLVANIA.

BLOWER.

Specification of Letters Patent.

Patented Jan. 4, 1921.

Application filed April 6, 1920. Serial no. 371,588.

To all whom it may concern Be it known that 1, CHARLES W. EMERY, acitizen of the United States, residing at Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented new and usefulImprovements in Blowers, of which the following is a specification.

The invention relates to particularly to fan blowers and has for anobject to provide a blower for use in creating a blast of air, theblower being particularly adapted for blowing dust, dirt or otherundesirable accumulations from machinery such as electric motors and thelike.

To the desired end, use is made of a body provided with a chamber havingmeans for creating the desired blast of air, together with a nozzleextended from the chamber to convey the air to the point of dispositionor exhaust, the body being provided with a handle so disposed that theentire device will be well balanced when grasped by the handle, thusgreatly facilitating its manipulation.

In the further disclosure of the invention, be had to the accompanyingdrawings, constituting a part of this specification, in which similarcharacters of ref erence denote corresponding parts in all the views,and in which Figure 1- is an elevation of the device.

Fig. 2- is a plan view.

Fig. 3 is a fragmentary horizontal sectional viewtaken on the line 3-3of Fig. 1.

Fig. 1- is a vertical transverse sectional view taken substantially onthe line H in Fig. 1, and

Fig. 5- is a fragmentaryelevation of a articular type of nozzle piece.

Referring more particularly to the views the blower in its entirety isindicated by the numeral 10 and comprises a body 11 of a somewhatcircular configuration and having an'otf-set nozzle 12. The body 11provides a chamber 13, one opening 14 thereto, being bordered by anupstanding circular flange 15 forming a seat for a motor 16 and thecasing 17 thereof, the motorcasmg being suitably screwed or otherwisesecure to the body 11. The opposite face of the body has an opening 18bordered by a circular flange 19, and over this opening is dlsosed ascreen 20, secured in place by a ring 21, suitably screwed or otherwisesecured to the body so that blowers and more i the screen will beinter-- posed between the flange l9 and the ring.

21. The motor may be of any suitable type and provides a fan 22 whichwhen the motor 1s attached to the body, will extend into the chamber 13;The nozzle 12 where it is formed with the chamber, has a mouth 23 ofconsiderable size, gradually'tapering to a small outlet end 2% and atwhich point a nozzle piece is attached. This nozzle piece may consist ofa flexible hose 26 or may be of a stiff material such ashardencd rubberproviding a nozzle piece 27 having an attaching end 28 for the nozzle 12with the other end of the nozzle piece elongated as at 29. l

The body 11 has a handle 30 which is preferably formed as an integralpart of the body and this handle it will be seen by carel'ul referenceto the views, is offset from the longitudinal plane ofthe body 11by-reason of the off-setting portions 31, so that the handle proper 32although extending parallel to the longitudinal plane of the body 11,

projects rearwardly from 3 the body as shown. This form of handleconstruction is a particularly novel feature of my device, in that byoff-setting the handle as shown, the weight of the motor will tend to bedistributed so as to balance the entire structure in the handlingthereof, whereas if the handle extended merely rearward from the body,the excessive weight of the motor to one side of the handle and bodywould tend to tilt the entire device, preventing easy manipulatioiithereof.

It will of eourse be understood that when the motor is actuated the fan22 will be subjected to a v ry rapid rotation, thus causing a suction oair through the opening 18 into the chamber 13 which air will beimpelled by the rapidly rotating fan to be projected through the nozzle12 and nozzle piece so that when the nozzle piece is brought into closecontact with a dusty or dirty part of a piece of machinery theaccumulations T a will be rapidly removed from the machinery, as forinstance in the case of a commutator on a motor, and in whiclrihstancethe accumulation of dirt or dust ordinarily greatly impairs theoperation of the motor.- with my device the blast of air will besufiicient to remove such accumulations and machiir cry of thischaracter can be easily kept free from carbon or other dust.

It will be apparent that I prefer to use any desired form of motor withmy form of device and the particularly-novel feature Q a i 1,864,860 ais the construction and arrangementof parts Having describedmyinvention, I claimforming the body 11, including the forma- A blowercomprising around body por tion of chamber or nozzle and the disposition having opposed openingsand a nozzle, tion of the handle for themanipulation of leading from the body and terminating ina 5 the article.a It will of course be understood that the ings having an inwardlyflanged edge, a remotor 16 operated by a suitable electric ticulatedplate coveringv this opening, means 'jfcurrentwhich can be conveyed tothe motor for removably securing the" plate to the bythe cable 16,havinga plug 16* for eonbody, the opposite sideof the body having 10nection with those parts of the machinery a motor attached thereto, theshaft of which 930 of the motor which will insure rotation of entering:the opening therein, blades on said the fan when thecurrent is suppliedto the shaft having their edges notched to receive motor. therein thereferred to inturned flange, and

restricted outlet mouth, onevof said open- 25- Finally in orderjto aid abetter suction of a bail-shaped-handle extending, outwardly 15 theairthrorigh the opening 18, I prefer- I from the body from the portionthereof to 35 ably form thereabout an inwardly flared lip which themotor is attached, and the inner orflange 18 which directs the air tothe arms of the said handle being disposed in central part of the fan22, the blades wherecontacting engagement with the motor. y of arenotched out at 22 to accommodate In testimony whereof I afiix mysignature.

CHARLES-VV. EMERY.

20 said lip or flange 18".

